Cross-shell excitations near the 'Island of Inversion': structure of $^30Mg$

A.N. Deacon, J.F. Smith, S.J. Freeman, R.V.F. Janssens, M.P. Carpenter, B. Hadinia, C.R. Hoffman, B.P. Kay, T. Lauritsen, C.J. Lister, D. O'Donnell, J. Ollier, T. Otsuka, D. Seweryniak, K.M. Spohr, D. Steppenbeck, S.L. Tabor, V. Tripathi, Y. Utsuno, P.T. Wady & 1 others S. Zhu

Research output: Contribution to journalArticle

Abstract

Excited states in 30Mg have been populated to ~6ℏ and 5 MeV excitation energy with the 14C(18O,2p) reaction. Firm spin assignments for states with J>2ℏ have been made in this nucleus. The level scheme is compared to shell-model calculations using the Universal sd effective interaction and the Monte Carlo shell model method. Calculations employing a full sd model space fail to reproduce the observed levels. The results indicate that excitations across the N=20 gap are required at relatively low excitation energy to achieve a description of the data. The incorporation of the f7/2 and p3/2 orbitals into the model space gives improved results but indicate the need for further refinement of the models to reproduce the observed spectra.
Original languageEnglish
Article number034305
JournalPhysical Review C
Volume82
Issue number3
DOIs
Publication statusPublished - 7 Sep 2010

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Deacon, A. N., Smith, J. F., Freeman, S. J., Janssens, R. V. F., Carpenter, M. P., Hadinia, B., ... Zhu, S. (2010). Cross-shell excitations near the 'Island of Inversion': structure of $^30Mg$. Physical Review C, 82(3), [034305]. https://doi.org/10.1103/PhysRevC.82.034305
Deacon, A.N. ; Smith, J.F. ; Freeman, S.J. ; Janssens, R.V.F. ; Carpenter, M.P. ; Hadinia, B. ; Hoffman, C.R. ; Kay, B.P. ; Lauritsen, T. ; Lister, C.J. ; O'Donnell, D. ; Ollier, J. ; Otsuka, T. ; Seweryniak, D. ; Spohr, K.M. ; Steppenbeck, D. ; Tabor, S.L. ; Tripathi, V. ; Utsuno, Y. ; Wady, P.T. ; Zhu, S. / Cross-shell excitations near the 'Island of Inversion' : structure of $^30Mg$. In: Physical Review C. 2010 ; Vol. 82, No. 3.
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abstract = "Excited states in 30Mg have been populated to ~6ℏ and 5 MeV excitation energy with the 14C(18O,2p) reaction. Firm spin assignments for states with J>2ℏ have been made in this nucleus. The level scheme is compared to shell-model calculations using the Universal sd effective interaction and the Monte Carlo shell model method. Calculations employing a full sd model space fail to reproduce the observed levels. The results indicate that excitations across the N=20 gap are required at relatively low excitation energy to achieve a description of the data. The incorporation of the f7/2 and p3/2 orbitals into the model space gives improved results but indicate the need for further refinement of the models to reproduce the observed spectra.",
author = "A.N. Deacon and J.F. Smith and S.J. Freeman and R.V.F. Janssens and M.P. Carpenter and B. Hadinia and C.R. Hoffman and B.P. Kay and T. Lauritsen and C.J. Lister and D. O'Donnell and J. Ollier and T. Otsuka and D. Seweryniak and K.M. Spohr and D. Steppenbeck and S.L. Tabor and V. Tripathi and Y. Utsuno and P.T. Wady and S. Zhu",
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Deacon, AN, Smith, JF, Freeman, SJ, Janssens, RVF, Carpenter, MP, Hadinia, B, Hoffman, CR, Kay, BP, Lauritsen, T, Lister, CJ, O'Donnell, D, Ollier, J, Otsuka, T, Seweryniak, D, Spohr, KM, Steppenbeck, D, Tabor, SL, Tripathi, V, Utsuno, Y, Wady, PT & Zhu, S 2010, 'Cross-shell excitations near the 'Island of Inversion': structure of $^30Mg$' Physical Review C, vol. 82, no. 3, 034305. https://doi.org/10.1103/PhysRevC.82.034305

Cross-shell excitations near the 'Island of Inversion' : structure of $^30Mg$. / Deacon, A.N.; Smith, J.F.; Freeman, S.J.; Janssens, R.V.F.; Carpenter, M.P.; Hadinia, B.; Hoffman, C.R.; Kay, B.P.; Lauritsen, T.; Lister, C.J.; O'Donnell, D.; Ollier, J.; Otsuka, T.; Seweryniak, D.; Spohr, K.M.; Steppenbeck, D.; Tabor, S.L.; Tripathi, V.; Utsuno, Y.; Wady, P.T.; Zhu, S.

In: Physical Review C, Vol. 82, No. 3, 034305, 07.09.2010.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Cross-shell excitations near the 'Island of Inversion'

T2 - structure of $^30Mg$

AU - Deacon, A.N.

AU - Smith, J.F.

AU - Freeman, S.J.

AU - Janssens, R.V.F.

AU - Carpenter, M.P.

AU - Hadinia, B.

AU - Hoffman, C.R.

AU - Kay, B.P.

AU - Lauritsen, T.

AU - Lister, C.J.

AU - O'Donnell, D.

AU - Ollier, J.

AU - Otsuka, T.

AU - Seweryniak, D.

AU - Spohr, K.M.

AU - Steppenbeck, D.

AU - Tabor, S.L.

AU - Tripathi, V.

AU - Utsuno, Y.

AU - Wady, P.T.

AU - Zhu, S.

PY - 2010/9/7

Y1 - 2010/9/7

N2 - Excited states in 30Mg have been populated to ~6ℏ and 5 MeV excitation energy with the 14C(18O,2p) reaction. Firm spin assignments for states with J>2ℏ have been made in this nucleus. The level scheme is compared to shell-model calculations using the Universal sd effective interaction and the Monte Carlo shell model method. Calculations employing a full sd model space fail to reproduce the observed levels. The results indicate that excitations across the N=20 gap are required at relatively low excitation energy to achieve a description of the data. The incorporation of the f7/2 and p3/2 orbitals into the model space gives improved results but indicate the need for further refinement of the models to reproduce the observed spectra.

AB - Excited states in 30Mg have been populated to ~6ℏ and 5 MeV excitation energy with the 14C(18O,2p) reaction. Firm spin assignments for states with J>2ℏ have been made in this nucleus. The level scheme is compared to shell-model calculations using the Universal sd effective interaction and the Monte Carlo shell model method. Calculations employing a full sd model space fail to reproduce the observed levels. The results indicate that excitations across the N=20 gap are required at relatively low excitation energy to achieve a description of the data. The incorporation of the f7/2 and p3/2 orbitals into the model space gives improved results but indicate the need for further refinement of the models to reproduce the observed spectra.

U2 - 10.1103/PhysRevC.82.034305

DO - 10.1103/PhysRevC.82.034305

M3 - Article

VL - 82

JO - Physical Review C

JF - Physical Review C

SN - 2469-9985

IS - 3

M1 - 034305

ER -

Deacon AN, Smith JF, Freeman SJ, Janssens RVF, Carpenter MP, Hadinia B et al. Cross-shell excitations near the 'Island of Inversion': structure of $^30Mg$. Physical Review C. 2010 Sep 7;82(3). 034305. https://doi.org/10.1103/PhysRevC.82.034305